* {
  -webkit-touch-callout: none;
  /*系统默认菜单被禁用*/
  -webkit-user-select: none;
  /*webkit浏览器*/
  -khtml-user-select: none;
  /*早期浏览器*/
  -moz-user-select: none;
  /*火狐*/
  -ms-user-select: none;
  /*IE10*/
  user-select: none;
}
iframe{
	width: 100%;
	height: 100%;
}